Grand Cherokee 4WD V8-4.7L VIN N (2000)
Crankshaft Position Sensor: Description and Operation
CKP Sensor Location
The Crankshaft Position Sensor (CKP) is mounted into the engine block above the starter motor.
Engine speed and crankshaft position are provided through the crankshaft position sensor. The sensor generates pulses that are the input sent to the
powertrain control module (PCM). The PCM interprets the sensor input to determine the crankshaft position. The PCM then uses this position, along
with other inputs, to determine injector sequence and ignition timing
The sensor is a hall effect device combined with an internal magnet. It is also sensitive to steel within a certain distance from it.
CKP Sensor Operation And Tonewheel
On this engine, a tonewheel is bolted to the engine crankshaft. This tonewheel has sets of notches at its outer edge.
